Potted Plants

Solution

Beth will need 20 window boxes.

Explanation

Step 1
Use the clues to find out how many plants of each type Beth bought.

Begonias (4 plants per pack)
Beth bought 10 packs of begonias. There are 4 begonia plants to a pack.
Think: 10 x 4 = 40 begonia plants

Lilies (2 plants per pack)
There are 4 fewer packs of lilies than packs of begonias.
Think: 10 – 4 = 6
There are 6 packs of lilies.
There are 2 lily plants per pack.
Think: 6 x 2 = 12 lily plants

Daisies (6 plants per pack)
There are 2 more packs of lilies than packs of daisies.
Think: 6 – 2 = 4
There are 4 packs of daisies.
There are 6 daisy plants per pack.
Think: 4 x 6 = 24 daisy plants

Geraniums (3 plants per pack)
The number of packs of geraniums equals the number of packs of daisies.
Since there are 4 packs of daisies, there are 4 packs of geraniums.
There are 3 geranium plants per pack.
Think: 4 x 3 = 12 geranium plants

Step 2
Use the clues to find out how many window boxes Beth needed for each type of plant.

Begonias
There are 40 begonia plants. Beth will plant 8 begonias to a window box.
Think: 40 ÷ 8 = 5
Beth will need 5 window boxes for the begonias.

Lilies
There are 12 lily plants.
Beth will plant 4 lily plants in each window box.
Think: 12 ÷ 4 = 3
Beth will need 3 window boxes for the lilies.

Daisies
There are 24 daisy plants.
Beth will plant 3 daisy plants in each window box.
Think: 24 ÷ 3 = 8
Beth will need 8 window boxes for the daisies.

Geraniums
There are 12 geranium plants.
Beth will plant 3 geraniums in each window box.
Think: 12 ÷ 3 = 4
Beth will need 4 window boxes for the geraniums.

Step 3
Find the total number of window boxes.
5 + 3 + 8 + 4 = 20 window boxes needed for all the plants.
Beth will need 20 window boxes for all the plants.

Plant Number of plants per pack Number of packs Multiplication sentence to show number of plants Total number of plants Number of plants per window box Division sentence to find number of window boxes Number of window boxes
Begonias 4 10 4 x 10 = 40 40 8 40 ÷ 8 = 5 5
Lilies 2 6 2 x 6 = 12 12 4 12 ÷ 4 = 3 3
Daisies 6 4 6 x 4 = 24 24 3 24 ÷ 3 = 8 8
Geraniums 3 4 3 x 4 = 12 12 3 12 ÷ 3 = 4 4
              20


Houghton Mifflin Math Grade 3